Air and like fluid compressor and exhauster.



C. L. DE W. READER.

AIR AND LIKE FLUlD COMPRESSOR AND EXHAUSTER.

APPLICATION FILED MAR.9,1914- RENEWED FEB. 8.1916.

Patented May2,1916. 2 SHEETSSHEET1 Q m m C. L. DE W. READER.

' AIR AND LIKE FLUID COMPRESSOR AND EXHAUSTER.

APPLICATION FILED MAR-9.19M. RENEWED FEB. 8. I916.

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App1ication filed Mar-ch 9, 1914, Serial No. 823,526.

UNITED ETATEE PATENT QI I IQE.

CHARLES LEONARD DE WILDE READER, OE HURS-LEY, NEAR WINCHESTER, ENGLAND.

AIR AND. LIKE FLUID COMPRESSOR AND EXHAUSTER.

0 all whom it may concern:

Be it known that L'CHARLES LEONARD DE IVILDE READER, a subject of HisMajesty the King of England, residing at Hursley, near Winchester, inthe county of Hants, Kingdom of England, have invented certain new anduseful Improvements in or Relating to Air and like Fluid Compressors andEX- hausters, of which the following is a specification.

This invention relates to improvements in air and like fluid compressorsand exhausters and their valves and it is designed to render them moreeflicient in operation by improving their general construction and thearrangement of their valves.

In my invention I use multiple ball nonreturn valves both for the inletand the outlet and I arrange these in pairs as single units in one ormore places about the cylinder.

My invention is hereinafter clearly described in one of its preferredforms with reference to the accompanying drawings in which Figure l is asectional side elevation of an air compressor; Fig. 2 is a plan viewthereof with parts broken away and removedto disclose more distantparts. Fig. 3 is a detail sectional view of the double or combined inletand outlet valve.

As shown the machine comprises a single cylinder 64 which is mounted inany convenient manner ona crank case or base I) in which is journaledthe crank shaft 0 from which the piston (Z receives its motion. At aconvenient number of places around the top of the cylinder, determinedin general by its dimensions, I provide a number of pairs of multiplenon-return ball valves 9 it, one 9 of each pair serving for the inlet ofthe air or other gas and the other it for the outlet of the same. Ipreferably as shown mount these valves in recesses provided with seatingflanges 6 formed in the flanged upper portion a of the said cylinder.The nonreturn ball valves employed are preferably formed with reversibleseatings and the seating of the lowermost or inlet valve rests directlyupon the seating flange proper 6 while the upper valve seating is spacedtherefrom by intermediate washers or facing pieces. These seatings areeach so formed that they have numerous passages through them eachterminating at each end in a valve seat so that either face of theseating is utilizable Specification of Letters Patent.

Patented May 2, 1916.

Renewed February 8, 1916. Serial No. 77,021.

to support the balls, wherefore the seating becomes a reversibleseating. The two valve seatings are together held in place in theirrecesses with the passages in alinement by means of vertical bolts 2'(four being shown in the present instance) which engage with their headscountersunk holes in an upper ring 7' and which pass through holes orgrooves formed partially in the side edges of the valve seats and theinterior side of the recesses in which the valves are housed. The saidinlet and outlet valves 9 and h are so spaced from each other anddisposed in their recesses that flat narrow slots or ports 71:communicating with the interior of the cylinder (4 lead to the spacebetween the two seating rings. Thus nominally all the balls rest bygravity on their seatings and those on the lower seating lift to admitthe air on the down or out stroke of the piston (Z and those on theupper seating lift as the compressed air or gas is expelled. The uppervalve seatings form a limiting stop with the then lower or inactivevalve seats receiving the balls of the lower seating as they move awayfrom their seats while the movement of the balls away from the upperseatings is limited by the underside of a water jacketed cover plate Zcontaining the delivering port m.

The valve seatings are so arranged that upon the suction stroke of thepiston, the balls of the inlet valves Will rise up directly into thecorresponding countersunk seatings of the delivery valve, which is soplaced immediately above and kept in this position by the vertical bolts2'. p

I prefer as shown in the drawings to drive the piston (Z by means of aneccentric a secured to the shaft 0. This eccentric n rotates in a block0 which is thereby caused to reciprocate in guide p formed in anenlargement g on or connected to the lower end of the piston. Obviouslytwo or more cylinders may be mounted upon a common inclosed crankchamber or bed plate.

What I claim as my invention and desire to secure by Letters Patent ofthe United States is 1. An air compressor comprising a cylinder and apiston with the cylinder provided at one end with common inlet andoutlet means including a pair of valves one opening toward the cylinderand the other away therefrom, and each valve comprising a broad, fiatgroup of closely associated balls and seats therefor with the outletvalve spaced from the inlet valve by a distance corresponding to thethickness of the conduit between the pair of valves and the cylinder andthe outlet valve being provided with receptaclesfor the balls of theinlet valve constituting stops for said balls.

2. An air compressor comprising a cylinder and piston with the cylinderprovided at one end with common inlet and outlet means including acircular series of matching inlet and outlet valves, each valvecomprising a laterally extended group of balls and a reversible seatingwith the seats of the outlet valve directed toward the inlet valvealining with the seats of the inlet valve, whereby the balls of theinlet valve find lodgment in those seats of the outlet valve directedtoward the inlet valve when said inlet valve is open.

3. An air compressor comprising a cylinder and a piston with thecylinder provided at one end with flat narrow slots leading therefromand with a delivery port common to the slots, and a pair of multiplenon-return ball valves for each slot, one valve member of each pairconstituting an inlet member and the other an outlet member, and saidoutlet member having seats for the ball valves of the inlet member, thecompressor being also provided with a cover plate defining one wall ofthe outlet and serving as a limiting member for the opening movements ofthe balls of the outlet member of each pair of valves.

4:- An air compressor comprising a cylinder and a piston, the cylinderhaving at one end flat inlet and outlet means, and a circular series ofmultiple non-return ball valves therefor arranged on opposite sides ofthe flat inlet and outlet means, one valve of each pair controlling theinlet to the cylinder and the other the outlet therefrom, and each valvecomprising a laterally extended group of balls and seats therefor, andthe compressor being also provided with a cover plate defining one'wallof the outlet beyond the outlet valves and serving as a limiting memberfor the opening movements of the balls of the outlet valves.

5. An air compressor comprising a cylinder and a piston with a commonfiat inlet and outlet at one end of the cylinder, and means forcontrolling the inlet and outlet comprising a closely associated pair ofmultiple non-return ball valves, each comprising a plurality of ballsand a seating therefor having through passages formed with seats for theballs, the passages through one member being in line with those throughthe other, whereby the passages of one member serve as stop receptaclesfor the ballsof the other member, and said two members being spacedapart by a distance less than the diameter of the balls, and a coverplate associated with and constituting, a stop member for the set ofballs belonging to that valve member forming a stop for the ball valvesof the other member.

6. An air compressor comprising a cylinder and a piston, the cylinderhaving a common inlet and outlet passage at one end with valvescontrolling said common inlet and outlet and comprising two alinedlaterally extended seatings, each provided with a corresponding numberof ball valves individual thereto, one of the seatings being on one sideof the common inlet and outlet passage for the cylinder, and the otherseating being on the other side thereof, and a stop member for the ballvalves of one seating, the other seating being associated with thefirst-named seating to serve as a stop member for the balls thereof.

7. An air compressor comprising a cylinder and a piston, the cylinderhaving a common inlet and outlet at one end with valves controlling saidcommon inlet and outlet and comprising two alined laterally extendedseatings, each provided with a corresponding number of ball valvesindividual thereto, one of the seatings being on one side of the commoninlet and outlet for the cylinder and the other seating being on theother side thereof, and a stop member for the ball valves of oneseating, the other seating being associated with the firstnamed seatingto serve as a stop member for the balls thereof, and both seatings beingreversible.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES LEONARD DE WILDE READER.

lVitnesses:

F. J. CLEVELAND, C. J. WITHERS.

copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents. Washington, D. G.

